JP6746179B1 - Copy protection paper and manufacturing method thereof - Google Patents

Copy protection paper and manufacturing method thereof Download PDF

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JP6746179B1
JP6746179B1 JP2019127995A JP2019127995A JP6746179B1 JP 6746179 B1 JP6746179 B1 JP 6746179B1 JP 2019127995 A JP2019127995 A JP 2019127995A JP 2019127995 A JP2019127995 A JP 2019127995A JP 6746179 B1 JP6746179 B1 JP 6746179B1
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latent image
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forming line
copy
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JP2021011098A (en
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清三 藤井
清三 藤井
山崎 信幸
信幸 山崎
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鮮明堂印刷株式会社
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Abstract

【課題】隠し模様である潜像の肉眼による視認を困難とし、高性能複写機であっても複写物に確実に隠し模様を現出させることによって原本と複写物との識別を容易にするとともに潜像の上に印刷される網点画像との干渉が起きないようにし、複写によって現出した潜像が明瞭に判別できるようにする。【解決手段】水平に対して25〜35度傾斜させた線幅が0.02〜0.06mmの傾斜潜像形成線1が用紙全面に設けてあり、この傾斜潜像形成線1に小幅の白の万線を交差させて傾斜潜像形成線1を点線とし、潜像パターン部2において傾斜潜像形成線1が4分割されて網点面積が5%以下としてある複写偽造防止用紙である。傾斜潜像形成線1は、藤色、藍色、紅色、若草色のいずれかとするのが好ましい。【選択図】図1PROBLEM TO BE SOLVED: To make it difficult to visually recognize a latent image which is a hidden pattern, and to make a hidden pattern visible in a copy even with a high-performance copying machine, thereby facilitating discrimination between an original and a copy. Interference with the halftone image printed on the latent image is prevented so that the latent image revealed by copying can be clearly discriminated. SOLUTION: An inclined latent image forming line 1 having a line width of 0.02 to 0.06 mm, which is inclined 25 to 35 degrees with respect to the horizontal, is provided on the entire surface of the sheet, and the inclined latent image forming line 1 has a small width. This is a copy/counterfeit prevention sheet in which the white lines are intersected to make the inclined latent image forming line 1 a dotted line, and the latent latent image forming line 1 is divided into four in the latent image pattern portion 2 so that the halftone dot area is 5% or less. .. The inclined latent image forming line 1 is preferably mauve, indigo, crimson, or green. [Selection diagram] Figure 1

Description

本発明は、高性能なカラー複写機などによる偽造を防止する用紙及びその用紙の製造方法に関する。
より詳しくは、アミ点面積5%以下の限りなく淡い印刷仕上りにより、その上に印刷する画線に影響を与えないコピーガード用紙である。
The present invention relates to a sheet for preventing forgery by a high-performance color copying machine and a method for manufacturing the sheet.
More specifically, it is a copy guard paper that does not affect the image lines printed on it by the extremely light printing finish with a dot area of 5% or less.

カラー複写機の性能の向上は目覚ましいものがあり、複写物であることを見分けることが困難になってきていることから、複写物であることが直ぐに判別できるようにした偽造防止手段が施された用紙が種々提案されている。偽造防止策として知られているものとして、透かし模様、蛍光インキ、及びホログラム等が用いられているが、これらの方法による偽造防止はコストがかかるので金銭的価値を有する有価証券や公的証明書に用いられるのが一般的である。
潜像による偽造防止パターンを形成する手法は、特定のパターンを作成して用紙に印刷するものであるので、透かし模様を用紙に形成する方法やホログラムを貼り付ける等の方法に較べてコストが低いというメリットがある。
Since the performance of color copiers has been remarkably improved and it has become difficult to distinguish the fact that it is a copy, anti-counterfeiting measures have been implemented so that it can be immediately identified as a copy. Various papers have been proposed. As a known anti-counterfeit measure, watermark patterns, fluorescent inks, holograms, etc. are used. However, since forgery prevention by these methods is costly, securities and public certificates with monetary value. Is commonly used for.
The method of forming the anti-counterfeiting pattern by the latent image is to print a specific pattern on the paper, so the cost is lower than the method of forming the watermark pattern on the paper or the method of attaching the hologram. There is an advantage.

VHスプリット万線方式で潜像が形成してある印刷物をカラー複写機で複写すると、背景となる非潜像パターン部が、実物(被複写物)の刷色(濁色系)とは異なる黒(墨)色で複写され、文字等の隠し模様である潜像パターン部は、実物の刷色に近い色で再現されるようにすることにより、印刷内容とは無関係な特定の模様が浮かびあがるようにしたものであり、カラーコピーされた複写物が原本ではないことが判別可能となる。 When a printed matter on which a latent image is formed by the VH split line method is copied by a color copying machine, the background non-latent image pattern portion is black different from the actual (copying object) color (turbid color system). The latent image pattern part, which is a hidden pattern such as characters, copied in (black) color is reproduced with a color close to the actual printing color, so that a specific pattern unrelated to the printed content appears. As described above, it is possible to determine that the color-copied copy is not the original.

特許第4380107号公報Japanese Patent No. 4380107 特許第4701730号公報Japanese Patent No. 4701730

肉眼では文字や模様であると認識されない隠し文字、例えば「COPY」や「偽物」、または、隠し模様の潜像が、複写機でコピーした複写物には出現して認識可能となって原本でないことが判別できるようにして偽造を防止する偽造防止パターンは、一例を挙げると、隠し模様の潜像と背景となる地紋とが異なった網点で構成されており、これを複写機でコピーすると複写物では網点の大小の差が濃度差となり、隠し模様が出現するようにしてある。 Hidden characters that are not recognized as characters or patterns with the naked eye, such as "COPY" or "counterfeit", or latent images with hidden patterns appear in the copy copied by the copying machine and can be recognized, and are not the original. For example, the anti-counterfeit pattern that can prevent the forgery from being identified is that the latent image of the hidden pattern and the background tint pattern are composed of different halftone dots. In the copy, the difference in the size of the halftone dots becomes the density difference so that a hidden pattern appears.

網点の大小の差による隠し模様の潜像と背景とで構成される従来の偽造防止用紙では、目が慣れてくると潜像が視認しやすくなり、偽造防止手段が施されている用紙であることが見破られてしまう。
隠し模様の潜像の部分は、ある程度の大きさの面積を必要とするが、潜像パターン部の面積を大きくすると更に肉眼での視認が容易となってコピー防止手段が施されている用紙であることが容易に認知されてしまう。また、隠し模様の潜像の上に別色の網点で構成される画像を加刷すると、潜像と網点が干渉してモアレが発生し、十分な印刷表現ができない。また、コピーによって現出した隠し模様、特に文字の判別が困難になるという問題がある。
With conventional anti-counterfeit paper that consists of a latent image with a hidden pattern due to the difference in the size of halftone dots and the background, it becomes easier to see the latent image when the eyes get used to it There is something to be discovered.
The hidden image part of the latent image requires an area of a certain size, but if the area of the latent image pattern part is increased, it becomes easier to see with the naked eye, and it is a paper with copy protection means. It is easily recognized that there is. In addition, when an image composed of halftone dots of different colors is reprinted on a latent image with a hidden pattern, the latent image and halftone dots interfere with each other to cause moire, and sufficient print expression cannot be performed. In addition, there is a problem that it is difficult to discriminate hidden patterns, especially characters, which are revealed by copying.

本発明は、肉眼による隠し模様の潜像の視認が困難であり、かつ、高性能複写方式の複写機であっても複写物に確実に隠し模様等の潜像を現出させることによって原本(オリジナル)と複写物との識別を容易にすると共に、潜像の上に印刷される網点画像との干渉が起きないようにし、コピーによって潜像が明瞭に判別できるように現出させることを課題とするものである。 According to the present invention, it is difficult to visually recognize a latent image of a hidden pattern with the naked eye, and even if the copying machine is a high-performance copying system, the latent image of the hidden pattern or the like can be surely made to appear in the copy so that an original In addition to facilitating the distinction between the original) and the copy, the interference between the halftone image printed on the latent image does not occur and the latent image is revealed so that it can be clearly discriminated. This is an issue.

文字またはパターンからなる潜像を形成した偽造防止用紙であって、用紙全面の前記文字またはパターン部とそれ以外の部分のうち一方には水平に対して25〜35度傾斜させた線幅0.02〜0.06mmの点線からなる傾斜潜像形成線が設けてあり、他方の部分には前記点線を幅方向に四分割した分割潜像形成線が設けてあるものであり、用紙全面の網点面積を5%以下としてある複写偽造防止用紙であり、傾斜潜像形成線である点線は、連続した傾斜潜像形成線に対して線幅0.16〜0.20mm、間隔0.34〜0.38mmの白の万線を交差させることによって点線としたものである複写偽造防止用紙である。
更に、紙面の全面に縦横の線からなる方眼が形成されている複写偽造防止用紙である。
傾斜潜像形成線は、藤色、藍色、紅色、若草色のいずれかであるコピー偽造防止用紙である。印刷色は、感色性の高い墨色及び藤色が好ましい。
更に、複写偽造防止用紙の製造方法であって、水平に対して25〜35度傾斜させた線幅0.02〜0.06mmの傾斜潜像形成線を設け、この傾斜潜像形成線に白の万線を交差させることによって傾斜潜像形成線を点線とし、更に、文字、または、模様を表す潜像パターン部以外の部分、若しくは、潜像パターン部のいずれか一方の部分の傾斜潜像形成線のみを4分割して4本の分割潜像線とし、他方の部分は分割せずに傾斜潜像形成線のままとすることによって得られた版下を使用して印刷する複写偽造防止用紙の製造方法である。
A forgery-proof paper on which a latent image of characters or patterns is formed, wherein one of the character or pattern portion on the entire surface of the paper and the other portion has a line width of 0. An inclined latent image forming line made up of a dotted line of 02 to 0.06 mm is provided, and a divided latent image forming line obtained by dividing the dotted line into four in the width direction is provided at the other part, and a net over the entire surface of the sheet. It is a copy forgery prevention sheet having a dot area of 5% or less, and a dotted line which is an inclined latent image forming line has a line width of 0.16 to 0.20 mm and an interval of 0.34 to a continuous inclined latent image forming line. It is a copy forgery prevention paper in which a dotted line is formed by intersecting 0.38 mm white lines.
Further, it is a copy forgery prevention paper in which a grid of vertical and horizontal lines is formed on the entire surface of the paper.
The inclined latent image forming line is a copy forgery prevention paper which is one of mauve, indigo, crimson and green. The printing color is preferably black or mauve, which has high color sensitivity.
Further, in the method for manufacturing a copy forgery prevention paper, an inclined latent image forming line having a line width of 0.02 to 0.06 mm inclined by 25 to 35 degrees with respect to the horizontal is provided, and the inclined latent image forming line is white. Of the lines, the inclined latent image forming line is made to be a dotted line, and the inclined latent image of the portion other than the latent image pattern portion showing the character or the pattern, or one portion of the latent image pattern portion. Copy forgery prevention in which only the forming line is divided into four to form four divided latent image lines, and the other part is not divided and is left as the inclined latent image forming line for printing using the plate It is a method of manufacturing paper.

本発明のコピー偽造防止用紙を高性能のカラー複写機等で複写すると、原本においては肉眼で識別できなかった潜像パターン(図柄や文字)が複写物に出現し、複写物は原本とは異なったものとなり、原本でないことを容易に判別することができる。
また、本発明の偽造防止用紙は、特殊なインキを必要とせず、従来の印刷技術によって印刷できることから、様々の印刷物に適用することができ、コピー偽造防止用紙を低コストで得ることができる。
従来の網点の大小の差による隠し模様の潜像パターンは見る者の目が慣れてくると潜像が視認し易くなるのに対して、本発明の隠し模様の潜像パターン部は、線群パターンであるために目視による視認が困難であり、コピー防止手段が施してある印刷物であることを容易に見破ることができない。
傾斜潜像形成部分の実線を4分割にして更に点線としているため、潜像の上に形成した網点画像との干渉が起きずモアレが生ずることがなく、また、5%以下の網点での印刷が可能であるので潜像パターンが紙面に印刷する印刷物(内容)に影響を及ぼすことがない。
実線を4分割して更に点線に加工して細点としており、従来のコピーガード印刷では、アミ点面積は10%〜20%程度のものであって、凝視すると潜像が視認できたが、本発明は一見印刷されていないように見え、限りなく淡いコピーガード印刷が可能である。
また、著しく細い点線で、紙面に均一な細点を印刷インク(油)でちりばめて仕上げているため、用紙面に文字・画像をボールペンで書く際、紙面から受ける抵抗が低減し、ボールペンのボールがスムースに回転して画線の途切れを防ぎ、すべるように、なめらかに描く事ができる。
When the copy forgery prevention paper of the present invention is copied by a high-performance color copying machine or the like, a latent image pattern (design or character) which cannot be visually identified in the original appears in the copy, and the copy is different from the original. Therefore, it can be easily identified that it is not the original.
Further, since the anti-counterfeit paper of the present invention does not require any special ink and can be printed by the conventional printing technique, it can be applied to various printed matters, and the copy anti-counterfeit paper can be obtained at low cost.
In the conventional latent image pattern of the hidden pattern due to the difference in the size of the halftone dots, the latent image becomes easy to be seen when the eyes of the observer become accustomed to it. Since it is a group pattern, it is difficult to visually recognize it, and it cannot be easily seen that the printed matter is provided with the copy preventing means.
Since the solid line of the inclined latent image forming portion is divided into four and further divided into dotted lines, interference with the halftone dot image formed on the latent image does not occur and moire does not occur. Since it is possible to print, the latent image pattern does not affect the printed matter (content) printed on the paper surface.
The solid line is divided into four and further processed into dotted lines to make fine dots. In the conventional copy guard printing, the dot area is about 10% to 20%, and the latent image was visible when staring, The invention appears to be unprinted at first glance and is capable of infinitely light copyguard printing.
In addition, since the paper surface is made up of fine dots that are markedly thin and sprinkled with printing ink (oil), the resistance received from the paper surface when writing letters and images on the paper surface is reduced, and the ballpoint ball Can be smoothly rotated to prevent breaks in the drawing lines, allowing smooth drawing.

(a)本発明の傾斜潜像形成線の模式的説明図。(b)潜像パターン部の拡大図。(A) A schematic explanatory view of an inclined latent image forming line of the present invention. (B) An enlarged view of the latent image pattern portion. 複写物の潜像パターン部の出現状態説明図(墨色)。Explanatory drawing of the appearance of the latent image pattern portion of the copy (black). 複写物の潜像パターン部の出現状態説明図(紅色)。Explanatory drawing of a latent image pattern portion of a copy (red). 複写物の潜像パターン部の出現状態説明図(草色)。Explanatory drawing of the latent image pattern portion of the copy (grass color). 複写物の潜像パターン部の出現状態説明図。Explanatory drawing of the appearance state of the latent image pattern portion of the copy.

以下、本発明のコピー偽造防止用紙を図面に基づいて説明する。
傾斜潜像形成線1と潜像パターン部2が視覚的にほぼ同一の濃度になるようにすることによって潜像パターン部2の存在が認識されないようにするものであり、図1(a)は、本発明のコピー偽造防止用紙の傾斜潜像形成線の模式的説明図であり、傾斜潜像形成線1が水平に対して30度傾斜させて用紙全体に形成してある。用紙全体に形成せず必要領域にだけ傾斜潜像形成線1を設けてもよいが、ノートやメモ用紙とする場合は全体に設ける。
Hereinafter, the copy forgery prevention sheet of the present invention will be described with reference to the drawings.
The inclined latent image forming line 1 and the latent image pattern portion 2 are made to have substantially the same density visually so that the existence of the latent image pattern portion 2 is not recognized, and FIG. FIG. 3 is a schematic explanatory view of an inclined latent image forming line of the copy forgery prevention sheet of the present invention, in which the inclined latent image forming line 1 is formed on the entire sheet with an inclination of 30 degrees with respect to the horizontal. The inclined latent image forming line 1 may be provided only in a necessary area without being formed on the entire sheet, but in the case of a notebook or memo sheet, it is provided on the entire sheet.

図1(b)は、潜像パターン部2における傾斜潜像形成線が4つに分割されている状態の拡大図であり、傾斜潜像形成線1の線幅Dは、印刷色によって異なるものとするが、好ましい線幅Dは、藤色、藍色、紅色の場合は0.050mm、若草色は0.045mm、墨色0.055mmである。平行する傾斜潜像形成線1の中心間隔Wは0.48mm、そして、分割潜像線1aの間隔Lは0.12mmであり、肉眼では、潜像パターン部2の4本の分割潜像線1aが傾斜潜像形成線1の線幅Dと連続する線であるように見えるので、潜像2の存在に気付くことはない。 FIG. 1B is an enlarged view of a state in which the inclined latent image forming line in the latent image pattern portion 2 is divided into four, and the line width D of the inclined latent image forming line 1 varies depending on the printing color. However, the preferable line width D is 0.050 mm for mauve, indigo, and crimson, 0.045 mm for green grass, and 0.055 mm for black. The center interval W between the inclined latent image forming lines 1 parallel to each other is 0.48 mm, and the interval L 3 between the divided latent image lines 1a is 0.12 mm. With naked eyes, four divided latent images of the latent image pattern portion 2 are formed. Since the line 1a seems to be a line continuous with the line width D of the inclined latent image forming line 1, the existence of the latent image 2 is not noticed.

用紙全面に形成された傾斜潜像形成線1は、傾斜潜像形成線1に交差する線幅0.28mm、間隔0.18mmの白の万線3(図面では空白)を交差角60度で重ねることによって、傾斜潜像形成線1を点線としている。
更に、潜像パターン部2において、傾斜潜像形成線1は4分割されて分割潜像線1aとなり、4本の分割潜像線1aが1本の傾斜潜像形成線1に対応し、肉眼では連続した線として認識されるので潜像が形成されていることが認識されない。
The inclined latent image forming line 1 formed on the entire surface of the paper has a line width of 0.28 mm intersecting the inclined latent image forming line 1 and a white parallel line 3 (blank in the drawing) having an interval of 0.18 mm at an intersection angle of 60 degrees. By overlapping, the inclined latent image forming line 1 is made a dotted line.
Further, in the latent image pattern portion 2, the inclined latent image forming line 1 is divided into four to become a divided latent image line 1a, and the four divided latent image lines 1a correspond to one inclined latent image forming line 1 and are visible to the naked eye. However, since it is recognized as a continuous line, it cannot be recognized that a latent image is formed.

図2〜図4に示す例は、用紙に本発明のコピー偽造防止用紙の具体例をカラー複写機で複写した複写物において潜像がどのように現出するかを示したものである。
潜像パターン部2のパターンは、カラー複写機でコピーすると、傾斜潜像形成線1が4分割された分割潜像線1aとした部分はコピーされず、色が抜けたものとなる。本実施例では「COPY」の文字が浮き出ることによって、コピーされた複製物であることを容易に認識することができる。
The examples shown in FIGS. 2 to 4 show how a latent image appears in a copy obtained by copying a specific example of the copy forgery prevention sheet of the present invention on a sheet by a color copying machine.
When the pattern of the latent image pattern section 2 is copied by a color copying machine, the portion of the latent image forming line 1 divided into four divided latent image lines 1a is not copied and the color is lost. In this embodiment, since the letters "COPY" are embossed, it is possible to easily recognize that it is a copied copy.

更に、紙面に縦横の線からなる傾斜潜像形成線1と同色の四角、または三角の方眼を形成した用紙を無線綴じのノートにすることによって、秘匿すべき事項のメモが外部に漏出するのを抑止することができる。 Furthermore, by using a sheet with a square or triangular grid of the same color as the inclined latent image forming line 1 consisting of vertical and horizontal lines on the paper surface as a notebook for perfect binding, the memo of confidential items leaks to the outside. Can be suppressed.

図5に示す例は、方眼を設けずに墨色の横罫線を設けたものであり、潜像パターン「COPY」の部分が傾斜潜像形成線1で構成されており、潜像パターン部以外の領域の傾斜潜像形成線1は4分割してある。
この用紙をカラー複写機で複写すると傾斜潜像形成線1の部分のパターン「COPY」が前述の実施例とは逆にコピーされて視認できるようになる。
In the example shown in FIG. 5, horizontal black ruled lines are provided without grids, and the latent image pattern “COPY” is composed of the inclined latent image forming line 1, and the latent image pattern parts other than the latent image pattern portion are formed. The inclined latent image forming line 1 in the area is divided into four.
When this paper is copied by a color copying machine, the pattern "COPY" in the portion of the inclined latent image forming line 1 is copied in the opposite manner to the above-mentioned embodiment and becomes visible.

1 傾斜潜像形成線
1a 分割潜像線
2 潜像パターン部
3 白の万線
W 傾斜潜像形成線の中心間隔
D 傾斜潜像形成線の線幅
白の万線の線幅
白の万線の間隔
分割潜像線の間隔
1 Slanted Latent Image Forming Line 1a Divided Latent Image Line 2 Latent Image Pattern Area 3 White Line W W Center Distance between Slanting Latent Image Forming Lines D Line Width of Slanting Latent Image Forming Line L 1 Line Width of White Lines L 2 White line spacing L 3 divided latent image line spacing

Claims (4)

文字またはパターンからなる潜像を形成した偽造防止用紙であって、用紙全面の前記文字またはパターン部とそれ以外の部分のうち一方には水平に対して25〜35度傾斜させた線幅0.02〜0.06mmの点線からなる傾斜潜像形成線が設けてあり、他方の部分には前記点線を幅方向に四分割した分割潜像形成線が設けてあるものであり、用紙全面の網点面積を5%以下としてあり、傾斜潜像形成線である点線は、連続した傾斜潜像形成線に対して線幅0.16〜0.20mm、間隔0.34〜0.38mmの白の万線を交差させることによって点線としたものである複写偽造防止用紙。 A forgery-preventing sheet having a latent image formed of characters or patterns, wherein one of the character or pattern portion and the other portion on the entire surface of the sheet has a line width of 0. An inclined latent image forming line made up of a dotted line of 02 to 0.06 mm is provided, and a divided latent image forming line obtained by dividing the dotted line into four in the width direction is provided at the other part, and a net over the entire surface of the sheet. The dot area is set to 5% or less, and the dotted line which is the inclined latent image forming line is a white line having a line width of 0.16 to 0.20 mm and an interval of 0.34 to 0.38 mm with respect to the continuous inclined latent image forming line. A copy forgery prevention paper that is a dotted line by intersecting lines. 請求項1において、更に方眼線が用紙全面に形成してある複写偽造防止用紙。 The copy forgery prevention sheet according to claim 1, further comprising a grid line formed on the entire surface of the sheet. 請求項1〜2のいずれかにおいて、傾斜潜像形成線が、藤色または若草色の淡い色のいずれかであるコピー偽造防止用紙。 The anti-counterfeit paper for copying according to any one of claims 1 to 2, wherein the inclined latent image forming line is a light color of mauve or light green. 用紙の全面に対して設けられる傾斜潜像形成線として用紙の水平に対して25〜35度傾斜させた線幅0.02〜0.06mmの傾斜潜像形成線を設定し、この傾斜潜像形成線に白の万線を交差させることによって傾斜潜像形成線を点線とし、更に、文字、または模様を表す潜像パターン部以外の部分、若しくは、潜像パターン部のいずれか一方の部分の傾斜潜像形成線のみを4分割して4本の分割潜像線とし、他方の部分は分割せずに傾斜潜像形成線のままとすることによって版下を作成して印刷する複写偽造防止用紙の製造方法。 As an inclined latent image forming line provided on the entire surface of the sheet, an inclined latent image forming line having a line width of 0.02 to 0.06 mm inclined by 25 to 35 degrees with respect to the horizontal of the sheet is set. By intersecting the white line with the formation line, the inclined latent image formation line is made into a dotted line, and further, a portion other than the latent image pattern portion showing a character or a pattern, or one portion of the latent image pattern portion is formed. Copy forgery prevention in which only the inclined latent image forming line is divided into four to make four divided latent image lines, and the other part is not divided and is left as the inclined latent image forming line to create and print a block copy Paper manufacturing method.
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US5788285A (en) * 1996-06-13 1998-08-04 Wicker; Thomas M. Document protection methods and products
JP2000242148A (en) * 1999-02-18 2000-09-08 Kashiyo Kk Printed matter for preventing copying and forgery
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